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CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jan. 27, 2018	Jan. 28, 2017	Jan. 27, 2018	Jan. 28, 2017
Income Statement [Abstract]
Net Sales	$ 228.0	$ 195.6	$ 659.3	$ 596.7
Cost of Products Sold	167.9	142.2	481.6	433.7
Gross Profit	60.1	53.4	177.7	163.0
Selling and Administrative Expenses	22.5	23.7	83.3	76.4
Amortization of Intangible Assets	2.0	0.6	3.7	1.8
Income from Operations	35.6	29.1	90.7	84.8
Interest Expense (Income), Net	0.3	(0.2)	0.3	(0.3)
Other Income, Net	(3.8)	(1.0)	(2.6)	(2.9)
Income before Income Taxes	39.1	30.3	93.0	88.0
Income Tax Expense	63.4	6.6	72.6	18.3
Net Income (Loss)	$ (24.3)	$ 23.7	$ 20.4	$ 69.7
Basic and Diluted Income (Loss) per Share:
Basic (in dollars per share)	$ (0.65)	$ 0.64	$ 0.54	$ 1.87
Diluted (in dollars per share)	(0.65)	0.63	0.54	1.86
Cash Dividends:
Common stock (in dollars per share)	$ 0.11	$ 0.09	$ 0.29	$ 0.27
Weighted Average Number of Common Shares Outstanding:
Basic (in shares)	37,292,934	37,217,302	37,275,041	37,297,757
Diluted (in shares)	37,292,934	37,470,653	37,661,020	37,477,967

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